C++ impact and status on Exercism

C++

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C++ Track Management

This page provides the Exercism community with the information and tools needed to manage the C++ track.

Students

134,723

Submissions

1,719,086

Mentoring Discussions

12,912

The C++ track needs attention ⚠️

Building

C++ syllabus

Learn More

Help create the track syllabus: is a set of concepts and learning exercises put together to teach foundational elements of the programming language.

Next goal: Create a complete syllabus with at least 20 concepts. Find out more.

19 concepts being taught

Includes

7,072 learnt

Strings

7,072 learnt

Basics

13,009 learnt

Numbers

5,215 learnt

Namespaces

8,421 learnt

Booleans

8,745 learnt

Comparisons

4,464 learnt

If Statements

4,464 learnt

Arrays and Vectors

2,631 learnt

Loops

3,664 learnt

Classes

3,113 learnt

References

2,050 learnt

Enumerations

2,278 learnt

Switch Statements

2,278 learnt

Headers

1,457 learnt

Functions

991 learnt

Auto

53 learnt

Smart Pointers

53 learnt

Pointers

282 learnt

15 active learning exercises

Started

Attempts

Completions

Mentoring requests

Log Levels

10,159

74,562 (avg. 7.3)

7,072 (69.6%)

194 (1.9%)

Lasagna

18,016

75,262 (avg. 4.2)

13,009 (72.2%)

217 (1.2%)

Freelancer Rates

5,931

51,093 (avg. 8.6)

5,215 (87.9%)

65 (1.1%)

Last Will

10,182

58,002 (avg. 5.7)

8,421 (82.7%)

110 (1.1%)

Pacman Rules

9,606

51,861 (avg. 5.4)

8,745 (91.0%)

93 (1.0%)

Vehicle Purchase

4,708

30,072 (avg. 6.4)

4,464 (94.8%)

38 (0.8%)

Making the Grade

3,192

53,939 (avg. 16.9)

2,631 (82.4%)

82 (2.6%)

Interest is interesting

3,963

28,936 (avg. 7.3)

3,664 (92.5%)

39 (1.0%)

Ellen's Alien Game

3,396

25,192 (avg. 7.4)

3,113 (91.7%)

42 (1.2%)

Election Day

2,268

25,001 (avg. 11.0)

2,050 (90.4%)

39 (1.7%)

Troll the Trolls

2,531

24,087 (avg. 9.5)

2,278 (90.0%)

52 (2.1%)

Doctor Data

1,850

26,575 (avg. 14.4)

1,457 (78.8%)

35 (1.9%)

lasagna-master

1,187

16,267 (avg. 13.7)

991 (83.5%)

14 (1.2%)

Power of Troy

905 (avg. 12.4)

53 (72.6%)

1 (1.4%)

Speedywagon Foundation

350

3,422 (avg. 9.8)

282 (80.6%)

4 (1.1%)

Practice Exercises

Learn More

Practice Exercises are exercises designed to allow students to solve an arbitrary problem, with the aim of them making use of the concepts they have learned so far.

Synced primary repo: bf3e4e5616e3baffc6bc91cf3d44e37074e777c7 (Updates should be instant)

Next goal: Implement 133 practice exercises. Find out more.

82 active practice exercises

Started

Attempts

Completions

Mentoring requests

Hello World

99,625

266,912 (avg. 2.7)

51,382 (51.6%)

12 (0.0%)

Leap

23,873

99,554 (avg. 4.2)

12,459 (52.2%)

2,526 (10.6%)

Reverse String

13,610

88,808 (avg. 6.5)

8,733 (64.2%)

1,511 (11.1%)

Space Age

8,567

67,095 (avg. 7.8)

4,238 (49.5%)

1,141 (13.3%)

Triangle

5,817

41,973 (avg. 7.2)

3,501 (60.2%)

771 (13.3%)

Grains

4,027

27,731 (avg. 6.9)

3,227 (80.1%)

602 (14.9%)

Raindrops

6,964

48,126 (avg. 6.9)

5,669 (81.4%)

643 (9.2%)

Pangram

3,271

23,684 (avg. 7.2)

2,605 (79.6%)

492 (15.0%)

Two Fer

3,011

12,208 (avg. 4.1)

2,509 (83.3%)

86 (2.9%)

Grade School

3,319

30,589 (avg. 9.2)

2,147 (64.7%)

232 (7.0%)

Hamming

4,823

14,126 (avg. 2.9)

3,908 (81.0%)

365 (7.6%)

Nucleotide Count

3,273

17,119 (avg. 5.2)

2,418 (73.9%)

280 (8.6%)

RNA Transcription

2,561

13,055 (avg. 5.1)

2,104 (82.2%)

171 (6.7%)

Collatz Conjecture

2,125

9,880 (avg. 4.6)

1,790 (84.2%)

54 (2.5%)

Difference of Squares

3,652

11,881 (avg. 3.3)

3,184 (87.2%)

180 (4.9%)

Nth Prime

2,387

16,271 (avg. 6.8)

1,593 (66.7%)

137 (5.7%)

Queen Attack

2,041

16,266 (avg. 8.0)

1,339 (65.6%)

115 (5.6%)

Sieve

1,986

11,415 (avg. 5.7)

1,592 (80.2%)

131 (6.6%)

Say

1,690

14,595 (avg. 8.6)

927 (54.9%)

120 (7.1%)

Gigasecond

2,941

6,077 (avg. 2.1)

2,005 (68.2%)

255 (8.7%)

Secret Handshake

1,386

7,262 (avg. 5.2)

1,129 (81.5%)

50 (3.6%)

Allergies

2,327

17,045 (avg. 7.3)

1,517 (65.2%)

94 (4.0%)

Protein Translation

1,483

9,734 (avg. 6.6)

1,228 (82.8%)

53 (3.6%)

Sum of Multiples

1,719

6,508 (avg. 3.8)

1,322 (76.9%)

71 (4.1%)

Prime Factors

1,511

5,958 (avg. 3.9)

1,221 (80.8%)

51 (3.4%)

Robot Name

1,632

11,092 (avg. 6.8)

1,133 (69.4%)

116 (7.1%)

Clock

1,206

6,885 (avg. 5.7)

686 (56.9%)

54 (4.5%)

Meetup

942

3,341 (avg. 3.5)

520 (55.2%)

25 (2.7%)

Beer Song

1,013

6,226 (avg. 6.1)

768 (75.8%)

35 (3.5%)

Atbash Cipher

2,081

33,135 (avg. 15.9)

1,553 (74.6%)

101 (4.9%)

Trinary

1,856

12,815 (avg. 6.9)

1,612 (86.9%)

37 (2.0%)

Binary Search

1,222

8,729 (avg. 7.1)

834 (68.2%)

42 (3.4%)

Phone Number

1,122

5,678 (avg. 5.1)

802 (71.5%)

42 (3.7%)

Series

854

3,651 (avg. 4.3)

664 (77.8%)

24 (2.8%)

Complex Numbers

1,098

6,083 (avg. 5.5)

684 (62.3%)

25 (2.3%)

Food Chain

990

2,976 (avg. 3.0)

719 (72.6%)

28 (2.8%)

Roman Numerals

911

3,485 (avg. 3.8)

676 (74.2%)

24 (2.6%)

Bob

3,040

21,297 (avg. 7.0)

2,454 (80.7%)

267 (8.8%)

Word Count

1,464

5,811 (avg. 4.0)

1,104 (75.4%)

92 (6.3%)

Circular Buffer

905

6,807 (avg. 7.5)

530 (58.6%)

45 (5.0%)

Crypto Square

752

5,361 (avg. 7.1)

502 (66.8%)

21 (2.8%)

ETL

1,424

3,423 (avg. 2.4)

1,155 (81.1%)

43 (3.0%)

Matching Brackets

1,220

7,680 (avg. 6.3)

970 (79.5%)

36 (3.0%)

Anagram

1,604

4,825 (avg. 3.0)

1,245 (77.6%)

97 (6.0%)

Binary Search Tree

1,138

5,672 (avg. 5.0)

369 (32.4%)

43 (3.8%)

Luhn

1,505

16,074 (avg. 10.7)

1,216 (80.8%)

57 (3.8%)

Acronym

994

4,325 (avg. 4.4)

762 (76.7%)

30 (3.0%)

Armstrong Numbers

1,507

6,957 (avg. 4.6)

1,309 (86.9%)

34 (2.3%)

Binary

1,267

4,742 (avg. 3.7)

1,012 (79.9%)

84 (6.6%)

Hexadecimal

1,458

6,938 (avg. 4.8)

1,230 (84.4%)

78 (5.3%)

Isogram

2,481

4,744 (avg. 1.9)

1,584 (63.8%)

99 (4.0%)

Pascal's Triangle

882

3,147 (avg. 3.6)

675 (76.5%)

25 (2.8%)

Perfect Numbers

366

2,325 (avg. 6.4)

309 (84.4%)

6 (1.6%)

Scrabble Score

1,220

3,507 (avg. 2.9)

936 (76.7%)

90 (7.4%)

All Your Base

871

5,008 (avg. 5.7)

588 (67.5%)

47 (5.4%)

Robot Simulator

1,263

5,062 (avg. 4.0)

716 (56.7%)

54 (4.3%)

Bank Account

621

2,641 (avg. 4.3)

304 (49.0%)

37 (6.0%)

Darts

1,977

12,926 (avg. 6.5)

1,751 (88.6%)

29 (1.5%)

Largest Series Product

338

2,289 (avg. 6.8)

263 (77.8%)

10 (3.0%)

Isbn Verifier

494

3,539 (avg. 7.2)

378 (76.5%)

12 (2.4%)

Linked List

198

1,545 (avg. 7.8)

111 (56.1%)

7 (3.5%)

Simple linked list

611

4,847 (avg. 7.9)

382 (62.5%)

18 (2.9%)

High Scores

567

4,762 (avg. 8.4)

506 (89.2%)

12 (2.1%)

Eliud's Eggs

663

2,675 (avg. 4.0)

600 (90.5%)

11 (1.7%)

Diamond

190

1,356 (avg. 7.1)

144 (75.8%)

4 (2.1%)

Run-Length Encoding

203

2,096 (avg. 10.3)

161 (79.3%)

4 (2.0%)

Rotational Cipher

671

5,040 (avg. 7.5)

600 (89.4%)

12 (1.8%)

Resistor Color

220

1,219 (avg. 5.5)

178 (80.9%)

4 (1.8%)

Resistor Color Duo

201

959 (avg. 4.8)

165 (82.1%)

2 (1.0%)

Minesweeper

174

999 (avg. 5.7)

114 (65.5%)

2 (1.1%)

Sublist

135

1,025 (avg. 7.6)

82 (60.7%)

3 (2.2%)

Zebra Puzzle

124

478 (avg. 3.9)

53 (42.7%)

5 (4.0%)

List Ops

168

1,906 (avg. 11.3)

98 (58.3%)

4 (2.4%)

Knapsack

124

1,034 (avg. 8.3)

74 (59.7%)

2 (1.6%)

Two Bucket

118

475 (avg. 4.0)

61 (51.7%)

2 (1.7%)

Yacht

150

1,295 (avg. 8.6)

108 (72.0%)

0 (0.0%)

Kindergarten Garden

477

3,936 (avg. 8.3)

350 (73.4%)

11 (2.3%)

D&D Character

215

1,526 (avg. 7.1)

136 (63.3%)

1 (0.5%)

Spiral Matrix

134

869 (avg. 6.5)

83 (61.9%)

4 (3.0%)

Parallel Letter Frequency

167

726 (avg. 4.3)

89 (53.3%)

5 (3.0%)

Pig Latin

151

1,329 (avg. 8.8)

77 (51.0%)

4 (2.6%)

Rail Fence Cipher

745 (avg. 7.8)

57 (59.4%)

2 (2.1%)

51 unimplemented practice exercises

Affine Cipher

Alphametics

Book Store

Bottle Song

Bowling

Change

Connect

Conway's Game of Life

Custom Set

Dominoes

DOT DSL

Error Handling

Flatten Array

Forth

Go Counting

Grep

Hangman

House

Killer Sudoku Helper

Ledger

Lens Person

Markdown

Matrix

Micro Blog

OCR Numbers

PaaS I/O

Palindrome Products

Poker

POV

Proverb

Pythagorean Triplet

Rational Numbers

React

Rectangles

Resistor Color Trio

REST API

Saddle Points

Satellite

SGF Parsing

Simple Cipher

Square Root

State of Tic-Tac-Toe

Strain

Tournament

Transpose

Tree Building

Twelve Days

Variable Length Quantity

Word Search

Wordy

Zipper

1 foregone practice exercise

Point Mutations

View data

Programming Tags

Learn More

Help manage the tags used to group, filter and recommend solutions, approaches and articles.

0 tags

Test Runner

Learn More

Create Test Runners that have the single responsibility of taking a solution, running all tests and returning a standardized output.

Current version: fa924a0b0728c894eacbeabe6b9656ec62416b66 (Takes up to 10 mins to deploy)

Total Test Runner Runs

1,681,165

Test Run Pass Rate

16.5% (277351)

Test Run Fail Rate

24.3% (408567)

Test Run Error Rate

59.2% (995247)

Representer

Learn More

Build a Representer: a bit of code that has the single responsibility of taking a solution and returning a normalized representation of it.

Current version: 29eab0a802586f7bc346f598a1ca98a74deb7547 (Takes up to 10 mins to deploy)

Total Representer Runs

299,127

Total Representation Comments Made

49,332

Feedback Given Frequency

16.5%

Analyzer

Learn More

Build an Analyzer for C++: Exercism's analyzers automatically assess student's submissions and provide mentor-style commentary.

Next goal: Build an Analyzer. Find out more.

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The C++ track needs attention ⚠️

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